Industry News
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Differences between PMSM Motors and BLDC Motors
Differences between PMSM Motors and BLDC Motors Speaking of the difference between PMSM motors and BLDC motors, in fact, in terms of modern motor applications, the difference between the two is not that big, and the two can be replaced with each other. Let me talk about the origin first: P...Read more -
Motor Asks, which one is Difficult for You?
Motor Asks, which one is Difficult for You? 1. Why does the motor produce shaft current? The current in the bldc motor shaft-bearing seat-base circuit is called shaft current. Causes of shaft current: (1) Asymmetrical magnetic field; (2) There are harmonics in the power supply current; (3) Poor m...Read more -
Analysis and Treatment of BLDC Motor Starting Failure
Analysis and Treatment of BLDC Motor Starting Failure 1. The voltage is too low to start the BLDC Motor. When the bldc motor cannot start after the three-phase power supply is connected, the possible reasons are: (1) The prescribed connection method of the bldc motor should be delta (△) connectio...Read more -
Causes of BLDC Motor Sweeping Troubles and Repairing Methods
Causes of BLDC Motor Sweeping Troubles and Repairing Methods When the gap between the inner ring of the bearing and the journal or the outer ring and the end cover is greater than 0.1mm, the stator and rotor may rub (sweep). When the bore is lighter, the BLDC Motor can still start and run, b...Read more -
Motor Science丨Understanding the BLDC Motor Control Algorithms
Motor Science丨Understanding the BLDC Motor Control Algorithms Introduction: Consumers require their household appliances, gardening tools and motor-driven products to be more powerful, smaller in size and more efficient. Like many consumer electronics products, consumers also expect these pr...Read more -
A Simple and Quick Way to Judge Whether the BLDC Motor is Good or Bad
A Simple and Quick Way to Judge Whether the BLDC Motor is Good or Bad A. Use the Shake Table The insulation shaker measures the insulation resistance between the three-phase windings of the motor (rated voltage 380V) and the insulation resistance to the ground (to the chassis). The insulation res...Read more -
The Difference between the Energy Efficiency Limit Values after the Implementation of the New China National Standard for Motors after June 1st 2021
The Difference between the Energy Efficiency Limit Values after the Implementation of the New China National Standard for Motors after June 1st 2021 The latest edition of China’s mandatory national standard GB 18613-2020 “Limited Values and Energy Efficiency Grades of Electric Motors...Read more -
Basic Knowledge of Motor Test
Basic Knowledge of Motor Test 1. How to do the BLDC Motor No-load Test? Before the test, check the BLDC Motor. After there is no problem, connect the three-phase power supply to make the motor idling without dragging the load. Then check the running sound, bearing operation and three-phase curr...Read more -
The Past, Present and Future of Permanent Magnet Motors?
The Past, Present and Future of Permanent Magnet Motors? Nowadays, the motor market is flooded with permanent magnet motors. It is normal that the growth rate of permanent magnet brushless motors exceeds 100%, not just luck. The growth rate of permanent magnet motors will continue for a long ...Read more -
Reasons and Solutions for Excessively High Motor Operating Temperature
Reasons and Solutions for Excessively High Motor Operating Temperature Analysis of the Cause of the Failure: 1. The power supply voltage is too high, which greatly increases the heating of the iron core; 2. The power supply voltage is too low, the motor is running with rated load, and the curren...Read more -
Protection Principle and Function of BLD Motor Operation
A. Overload Protection When the bldc motor is in an overload fault and exceeds its rated current for a long time, it will cause the bldc motor to overheat, reduce insulation and burn out. The protector calculates the heat capacity of the bldc motor according to the heating characteristics of th...Read more -
Calculation Formula and Method of Electric Motor
Calculation Formula and Method of Electric Motor 1. Motor current calculation: For AC three-phase four-wire power supply, the line voltage is 380, the phase voltage is 220, and the line voltage is the root 3-phase voltage For a motor, the voltage of a winding is the phase voltage, and the voltag...Read more
